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Induction-loop traffic light sensors — it's like the pedestrian crossing button, but for cars. Minimizing idle time at traffic lights.
Tony T3
Tony T3 May 04, 2013
Induction-loop traffic light sensors — it's like the pedestrian crossing button, but for cars. Minimizing idle time at traffic lights.

I've seen these sensors...

Often 5
Occasionally 4
Rarely 6
Never 12
What is it? 1
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